The icon has three main shapes. A trapezoid with the letter "O" in the center is covering the left side of a square that has two diagonal lines that form a downward "V" shape inside it. A small circle with an "L" shape covers the bottom right corner of the square.

Can we have both Office 2010 *and* Office 2013? ...and some of the other logos, like Windows Server, Exchange, Silverlight, etc.?

Usage story of Outlook icon

In today’s connected world, transferring information, keeping in touch, and getting up to date on events are more important than ever. Email has been one of the cornerstones of modern communication, and it’s used everywhere -- from newsletters to business arrangements, you’ll find it difficult to live in today’s era without it. Microsoft knows this very well, and they have a rock solid, reliable program to help your email-centric lifestyle: Outlook!

Today, Microsoft’s Outlook is represented by a snazzy, clean icon set, but the program has decades of history behind it. Let’s look back and examine how this email client icon became to what it is right now.

The Outlook icon first took shape back in 1997. Bundled with Windows, the icon was simple, spartan, and very small. The technology wasn’t very sophisticated back then, so there wasn’t much detail to get by with.

With the release of a new Windows version came a cleaner, more stylized icon design for Outlook.

In 2003, Microsoft adopted a new visual design language for Windows, and with it came a design change for the Outlook logo.

Windows Vista came along, and with it another new visual revamp. Sticking to less detail, more clarity, and more gradients, Microsoft redesigned the Outlook logo as well.

Windows 7 further refines the clean, bold look of the Outlook icon.

And from 2013 onwards, Microsoft adopted a new change to the icon - switch Outlook’s main color from yellow to blue. And here we are today: clean, crisp, and simple.